Abstract
Solvothermal synthesis has shown to have a great potential to synthesize Zinc Oxide nanoparticles (ZnO NPs) with less than 10 nm size. In this study, we present a rapid synthesis of ZnO NPs in which ZnO NPs with more uniform shape and highly dispersed were synthesized using zinc acetate dihydrate (Zn(CH3COO)2 2H2O) and potassium hydroxide (KOH) as a precursor and absolute ethanol as solvent via solvothermal method. Few techniques were exploited to characterize synthesized ZnO NPs including X-ray diffraction (XRD), transmission electron microscope (TEM), Brunauer-Emmett-Teller (BET), energy-dispersive X-ray spectroscopy (EDX), fourier transform infrared (FT-IR) spectroscopy, and ultraviolet visible (UV-Vis) spectroscopy. Synthesized ZnO NPs that were prepared via solvothermal synthesis method at 60 °C for 3 hours exhibited a wurtzite structure with a crystalline size of 10.08 nm and particle size of 7.4 ± 1.2 nm. The UV-vis absorption spectrum has shown peak at 357 nm indicate the presence of ZnO NPs. Hence, better quality with uniform size ZnO NPs can be easily synthesized with reduced amount of time via solvothermal synthesis method rather than using other complicated and lengthy synthesis methods.
Highlights
High demands of nanomaterials have produced enormous applications in global industries
We present a rapid synthesis of Zinc Oxide nanoparticles (ZnO NPs) in which ZnO NPs with more uniform shape and highly dispersed were synthesized using zinc acetate dihydrate (Zn(CH3COO)2 2H2O) and potassium hydroxide (KOH) as a precursor and absolute ethanol as solvent via solvothermal method
Synthesized ZnO NPs were able to be confirmed by various characterization techniques including X-ray diffraction (XRD), transmission electron microscope (TEM), fourier transform infrared (FT-IR), and Ultraviolet visible spectroscopy (UV-vis) spectroscopy
Summary
High demands of nanomaterials have produced enormous applications in global industries. ZnO NPs are among of various semiconductivity materials with a distinctive electronic and photonic wurtzite semiconductor with a wide direct band gap (3.37eV) and high exciton binding energy (60 meV) at room temperature.[6]. This makes ZnO NPs popular for use in commercially available especially in sunscreens and cosmetics which able to block UV radiation when they are less than 50 nm.[7,8,9] Heiligtag et al.[10] stated that smaller size of NPs provide a better protection of skin against UV damage
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